Electric-fuse indicator



Sept. 6,1927.

F. SCORDAMAGLIA ELECTRIC FUSE INDICATOR Filed. March 5. 1926 INVENTOR Scorch/72a A TORNE PATENT OFFICE.

- FRANK SGO BDAHAGLI A, OE BROOKLYN, NEW YORK.

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Application 1115a nmna, 192s.- Serial No. 91,874.

This invention relates to electric fuse indicators, and improvements therein, particularly'of the type used in conjunction with cut-out blocks, and the invention has for an object the provision of a novel constructionaand arrangement of. parts, indicating by a glowing lamp that the fuse has blown.

For further comprehension of theinvention, and of the objects and advantages thereof, reference will be had. to the following description, and accompanying drawing, and to the appended claims in which the various novel features of the invention are more particularly set forth.

Referring to the drawing forminga material part of this disclosure Fig. 1 shows a plan-elevational view of an ordinary cut-out fuse block, having this invention applied thereto.

Fig. 2, shows a transversely sectional view,

taken on the line 2-2 of Fig. 1.

Fig. 3 shows a longitudinal sectional view taken on the line 3-3 of Fig. 1.

Fi 4 shows a fragmentary transverse sec. tiona View, similar to Fig. 2, but of a modi fied construction.

Fig. 5 shows a view, similar to Fig. 4, but of a further modification.

Fig. 6 shows a view, similar to Figs. 4, and5, but of another modified form.

Fig. 7 shows a transverse sectionalview of a modified form of cli adjustably adapted to hold the fuse, and amp indicator.

The reference numeral 10, indicates a customary porcelain cut-out fuse block, having countersunk apertures 11, to accommodate screws for (fastening to a base, transverse grooves 12,l and 13, for power lead wires, and longitudinal chambers 14, and 15, for fuses or the like. Chamber 14 has clips 16 and 17 su ported from the bottom thereof, clip 17 Being, connected to a terminal 18, clip 16 to a terminal 19 extending into transverse groove 12, and a customary fuse 20 being inserted between said clips 16, and 17,- forming a complete line of a circuit from terminal 19 to 18. Chamber 15 has clips 16 and 17', supported from the bottom thereof,

' clip 17' being connected to a terminal 18',

clip 16" to a terminal 19' extending into transverse groove 13, by means of connection strip 21, in a recess 22, of the block 10, which recess may thereafter be filled with sealin -wax, as is customary, and a lamp 23, wit

auxiliary clips 24, and 25 on the ends being inserted between said clips 16' and 17 re- .movable portion, 37

spectively. Auxiliary clips 24, and 25, have their upper ends bent over upon themselves,

asshown in Fig. 2, to form-a double action clip, viz, the outer portions exerting holding pressureagainst a porcelain insulation member 26 also resting on the side wallsof chaming pressure against a fuse 27 inserted be: tween said clips 24, and 25, forming a complete line of a circuit from the terminal 19,-

1 ber 1 5, and the inner portions exerting hold- 18, the lamp 23 being of very high resistance, so as to force the current through the path of least resistance, viz, the fuse. But

the fact that the fuse has blown.

should the fuse 27 'blow, for some reasointhe I In the modification shown in Fig. 4, the

In Fig. 6, a hife blade clip 17 being pro-- vided to vco-act with a knife blade fuse 27", and a knife blade lamp 23, instead of the cartridge fuse and lamp, used in the other embodiments. In Fig. 7, an adjustable clip, to accommodate different dieineters of fuses, is shown engaging fuse 27, and lamp 23. This clip is formed with a stationary'side 35, fixed n any suitable manner to the bracket, and a movable side 36, formed with an upper movable portion 37, and a lower movable portion 38. The upper mentary to the upper parts of the stationary side of the clip, 39, having an elongated aperture 40, through which extends a screw 41, threadedl engaged in an upper flange 42, of the lower portion, and an adjusting stud 43 has an abutting head 44', and is revolvable in the part 37, and threadedly engaged in the part 35. .The lower movable portion being formed complementary to the lower part of the stationary side of the clip, and provided with a lower flange 39", a holding screw 41, and an adjusting stud 43, all similarly conand provided with a flange eing formed compleof the details of construction, or otherwise altering the arrangement of the correlated parts without departin from the spirit or 'the scope of the appen ed claims.

' Having thus described my invention what I claim as new and desire to secure by United States Letters Patent, is

1. In a device of the class described, an insulation block formed with a pair of transverse 'rooves and a air of lon 'tudinal D 7 chambers. a terminal in one of said transverse grooves, electrically connected to a clip in one of said chambers, engaging one end of a fuse having its other end engaged by another clip electrically connected to a terminal, and a terminal in the other of said transverse grooves electrically con ected to a long clip-in the other of said ambers, engaging one end each of a fuse and an indicatin er long clip electrically connected to another terminal.

2. In a device of the class described, an insulation block formed with a pair of transverse grooves, and a pair of longitudinal chambers, a terminal in one of sald transverse grooves, electrically connected to a clip in one of said chambers, engaging one end of a fuse having its other end engaged by another clip electrically connected to a terlamp having their other ends engaged yanoth minal, a terminal in the other of said transverse grooves, electrically connected, to a long clip in the other of said chambers, en-

a in one end each of a fuse and an in- .2 g e dicating lamp, having their other ends engaged by another long clip electrically connected to-fa-nother terminal, and an insulation member surrounding said long clip, retained in position by said upper portion, and preventing accidental short-circuiting of said clips.

In testimony whereof I have aflixed my signature.

FRANK SCORDAMAGLIA, 

